Use this Brussels Griffon puppy weight calculator to predict how big your puppy will get. Brussels Griffons are a toy breed that typically reach full size by around 9-12 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.
Indoor/outdoor enclosure — a good fit for toy and small breeds.
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| Age | Weight |
|---|---|
| Birth | 0.2 to 0.4 lbs |
| 2 Months | 2 to 3 lbs |
| 3 Months | 3 to 4 lbs |
| 4 Months | 4 to 5 lbs |
| 5 Months | 4 to 6 lbs |
| 6 Months | 5 to 7 lbs |
| 7 Months | 6 to 8 lbs |
| 9 Months | 7 to 9 lbs |
| 10 Months | 8 to 10 lbs |
| 1 Year | 8 to 10 lbs |
| 1.5 Years | 8 to 10 lbs |
| 2 Years | 8 to 10 lbs |
Estimated from typical toy-breed growth curves and the Brussels Griffon's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
Reflecting the Pug ancestry in the breed's development, Brussels Griffons carry some brachycephalic tendencies including breathing sensitivity in heat. They're also predisposed to patellar luxation, cataracts, and progressive retinal atrophy, and their prominent eyes are prone to injury and irritation. Dental crowding from the flat face is common given a smaller jaw fitting the same 42 teeth as other breeds.
A quality small-breed diet in measured portions; keeping weight controlled helps with the breed's breathing sensitivity.
Grooming depends on coat type — the rough-coated variety needs regular hand-stripping, while the smooth-coated variety needs only minimal brushing.
Brussels Griffons are intelligent and affectionate, training well with positive reinforcement; this breed's tendency toward separation anxiety is worth planning for if left alone often.
The Brussels Griffon descends from a Belgian stable dog called the Smousje, historically kept to control rodents around coach horses, later crossed with imported toy breeds including the Pug and King Charles Spaniel in the 19th century to create the modern toy-sized Griffon. A small dog resembling an early Griffon type appears in Jan van Eyck's 15th-century painting The Arnolfini Marriage.
Brussels Griffons are known for an expressive, almost human-like face and a genuinely affectionate, sometimes clingy personality — closely bonded to their people, and generally not a breed suited to being left alone for long stretches.
